Add support for hosted messages and `{{ MessageURL }}` tpl tag.

handlers.go

@@ -108,6 +108,8 @@ func registerHTTPHandlers(e *echo.Echo) {
 		"subUUID"))
 	e.GET("/link/:linkUUID/:campUUID/:subUUID", validateUUID(handleLinkRedirect,
 		"linkUUID", "campUUID", "subUUID"))
+	e.GET("/campaign/:campUUID/:subUUID", validateUUID(handleViewCampaignMessage,
+		"campUUID", "subUUID"))
 	e.GET("/campaign/:campUUID/:subUUID/px.png", validateUUID(handleRegisterCampaignView,
 		"campUUID", "subUUID"))
 

init.go

@@ -141,6 +141,7 @@ type constants struct {
 	LinkTrackURL string
 	ViewTrackURL string
 	OptinURL     string
+	MessageURL   string
 }
 
 func initConstants() *constants {
@@ -165,6 +166,9 @@ func initConstants() *constants {
 	// url.com/link/{campaign_uuid}/{subscriber_uuid}/{link_uuid}
 	c.LinkTrackURL = fmt.Sprintf("%s/link/%%s/%%s/%%s", c.RootURL)
 
+	// url.com/link/{campaign_uuid}/{subscriber_uuid}
+	c.MessageURL = fmt.Sprintf("%s/campaign/%%s/%%s", c.RootURL)
+
 	// url.com/campaign/{campaign_uuid}/{subscriber_uuid}/px.png
 	c.ViewTrackURL = fmt.Sprintf("%s/campaign/%%s/%%s/px.png", c.RootURL)
 
@@ -193,6 +197,7 @@ func initCampaignManager(q *Queries, cs *constants, app *App) *manager.Manager {
 		OptinURL:      cs.OptinURL,
 		LinkTrackURL:  cs.LinkTrackURL,
 		ViewTrackURL:  cs.ViewTrackURL,
+		MessageURL:    cs.MessageURL,
 	}, newManagerDB(q), campNotifCB, lo)
 
 }

internal/manager/manager.go

@@ -91,6 +91,7 @@ type Config struct {
 	LinkTrackURL   string
 	UnsubURL       string
 	OptinURL       string
+	MessageURL     string
 	ViewTrackURL   string
 }
 
@@ -312,6 +313,9 @@ func (m *Manager) TemplateFuncs(c *models.Campaign) template.FuncMap {
 			// TODO: Show private lists list on optin e-mail
 			return fmt.Sprintf(m.cfg.OptinURL, msg.Subscriber.UUID, "")
 		},
+		"MessageURL": func(msg *CampaignMessage) string {
+			return fmt.Sprintf(m.cfg.MessageURL, c.UUID, msg.Subscriber.UUID)
+		},
 		"Date": func(layout string) string {
 			if layout == "" {
 				layout = time.ANSIC

models/models.go

@@ -74,7 +74,7 @@ var regTplFuncs = []regTplFunc{
 		replace: `{{ TrackLink "$3" . }}`,
 	},
 	regTplFunc{
-		regExp:  regexp.MustCompile(`{{(\s+)?(TrackView|UnsubscribeURL|OptinURL)(\s+)?}}`),
+		regExp:  regexp.MustCompile(`{{(\s+)?(TrackView|UnsubscribeURL|OptinURL|MessageURL)(\s+)?}}`),
 		replace: `{{ $2 . }}`,
 	},
 }

public.go

@@ -84,6 +84,58 @@ func (t *tplRenderer) Render(w io.Writer, name string, data interface{}, c echo.
 	})
 }
 
+// handleViewCampaignMessage renders the HTML view of a campaign message.
+func handleViewCampaignMessage(c echo.Context) error {
+	var (
+		app      = c.Get("app").(*App)
+		campUUID = c.Param("campUUID")
+		subUUID  = c.Param("subUUID")
+	)
+
+	// Get the campaign.
+	var camp models.Campaign
+	if err := app.queries.GetCampaign.Get(&camp, 0, campUUID); err != nil {
+		if err == sql.ErrNoRows {
+			return c.Render(http.StatusNotFound, tplMessage,
+				makeMsgTpl("Not found", "", `The e-mail campaign was not found.`))
+		}
+
+		app.log.Printf("error fetching campaign: %v", err)
+		return c.Render(http.StatusInternalServerError, tplMessage,
+			makeMsgTpl("Error", "", `Error fetching e-mail campaign.`))
+	}
+
+	// Get the subscriber.
+	var sub models.Subscriber
+	if err := app.queries.GetSubscriber.Get(&sub, 0, subUUID); err != nil {
+		if err == sql.ErrNoRows {
+			return c.Render(http.StatusNotFound, tplMessage,
+				makeMsgTpl("Not found", "", `The e-mail message was not found.`))
+		}
+
+		app.log.Printf("error fetching campaign subscriber: %v", err)
+		return c.Render(http.StatusInternalServerError, tplMessage,
+			makeMsgTpl("Error", "", `Error fetching e-mail message.`))
+	}
+
+	// Compile the template.
+	if err := camp.CompileTemplate(app.manager.TemplateFuncs(&camp)); err != nil {
+		app.log.Printf("error compiling template: %v", err)
+		return c.Render(http.StatusInternalServerError, tplMessage,
+			makeMsgTpl("Error", "", `Error compiling e-mail template.`))
+	}
+
+	// Render the message body.
+	m := app.manager.NewCampaignMessage(&camp, sub)
+	if err := m.Render(); err != nil {
+		app.log.Printf("error rendering message: %v", err)
+		return c.Render(http.StatusInternalServerError, tplMessage,
+			makeMsgTpl("Error", "", `Error rendering e-mail message.`))
+	}
+
+	return c.HTML(http.StatusOK, string(m.Body()))
+}
+
 // handleSubscriptionPage renders the subscription management page and
 // handles unsubscriptions.
 func handleSubscriptionPage(c echo.Context) error {

static/queries.sql

@@ -1,710 +0,0 @@
--- subscribers
--- name: get-subscriber
--- Get a single subscriber by id or UUID.
-SELECT * FROM subscribers WHERE CASE WHEN $1 > 0 THEN id = $1 ELSE uuid = $2 END;
-
--- name: subscriber-exists
--- Check if a subscriber exists by id or UUID.
-SELECT exists (SELECT true FROM subscribers WHERE CASE WHEN $1 > 0 THEN id = $1 ELSE uuid = $2 END);
-
--- name: get-subscribers-by-emails
--- Get subscribers by emails.
-SELECT * FROM subscribers WHERE email=ANY($1);
-
--- name: get-subscriber-lists
-WITH sub AS (
-    SELECT id FROM subscribers WHERE CASE WHEN $1 > 0 THEN id = $1 ELSE uuid = $2 END
-)
-SELECT * FROM lists
-    LEFT JOIN subscriber_lists ON (lists.id = subscriber_lists.list_id)
-    WHERE subscriber_id = (SELECT id FROM sub)
-    -- Optional list IDs or UUIDs to filter.
-    AND (CASE WHEN $3::INT[] IS NOT NULL THEN id = ANY($3::INT[])
-          WHEN $4::UUID[] IS NOT NULL THEN uuid = ANY($4::UUID[])
-          ELSE TRUE
-    END)
-    AND (CASE WHEN $5 != '' THEN subscriber_lists.status = $5::subscription_status END)
-    AND (CASE WHEN $6 != '' THEN lists.optin = $6::list_optin ELSE TRUE END);
-
--- name: get-subscriber-lists-lazy
--- Get lists associations of subscribers given a list of subscriber IDs.
--- This query is used to lazy load given a list of subscriber IDs.
--- The query returns results in the same order as the given subscriber IDs, and for non-existent subscriber IDs,
--- the query still returns a row with 0 values. Thus, for lazy loading, the application simply iterate on the results in
--- the same order as the list of campaigns it would've queried and attach the results.
-WITH subs AS (
-    SELECT subscriber_id, JSON_AGG(
-        ROW_TO_JSON(
-            (SELECT l FROM (SELECT subscriber_lists.status AS subscription_status, lists.*) l)
-        )
-    ) AS lists FROM lists
-    LEFT JOIN subscriber_lists ON (subscriber_lists.list_id = lists.id)
-    WHERE subscriber_lists.subscriber_id = ANY($1)
-    GROUP BY subscriber_id
-)
-SELECT id as subscriber_id,
-    COALESCE(s.lists, '[]') AS lists
-    FROM (SELECT id FROM UNNEST($1) AS id) x
-    LEFT JOIN subs AS s ON (s.subscriber_id = id)
-    ORDER BY ARRAY_POSITION($1, id);
-
--- name: insert-subscriber
-WITH sub AS (
-    INSERT INTO subscribers (uuid, email, name, status, attribs)
-    VALUES($1, $2, $3, $4, $5)
-    returning id
-),
-listIDs AS (
-    SELECT id FROM lists WHERE
-        (CASE WHEN ARRAY_LENGTH($6::INT[], 1) > 0 THEN id=ANY($6)
-              ELSE uuid=ANY($7::UUID[]) END)
-),
-subs AS (
-    INSERT INTO subscriber_lists (subscriber_id, list_id, status)
-    VALUES(
-        (SELECT id FROM sub),
-        UNNEST(ARRAY(SELECT id FROM listIDs)),
-        (CASE WHEN $4='blacklisted' THEN 'unsubscribed'::subscription_status ELSE 'unconfirmed' END)
-    )
-    ON CONFLICT (subscriber_id, list_id) DO UPDATE
-    SET updated_at=NOW()
-)
-SELECT id from sub;
-
--- name: upsert-subscriber
--- Upserts a subscriber where existing subscribers get their names and attributes overwritten.
--- The status field is only updated when $6 = 'override_status'.
-WITH sub AS (
-    INSERT INTO subscribers (uuid, email, name, attribs)
-    VALUES($1, $2, $3, $4)
-    ON CONFLICT (email) DO UPDATE
-        SET name=$3,
-        attribs=$4,
-        updated_at=NOW()
-    RETURNING uuid, id
-),
-subs AS (
-    INSERT INTO subscriber_lists (subscriber_id, list_id)
-    VALUES((SELECT id FROM sub), UNNEST($5::INT[]))
-    ON CONFLICT (subscriber_id, list_id) DO UPDATE
-    SET updated_at=NOW()
-)
-SELECT uuid, id from sub;
-
--- name: upsert-blacklist-subscriber
--- Upserts a subscriber where the update will only set the status to blacklisted
--- unlike upsert-subscribers where name and attributes are updated. In addition, all
--- existing subscriptions are marked as 'unsubscribed'.
--- This is used in the bulk importer.
-WITH sub AS (
-    INSERT INTO subscribers (uuid, email, name, attribs, status)
-    VALUES($1, $2, $3, $4, 'blacklisted')
-    ON CONFLICT (email) DO UPDATE SET status='blacklisted', updated_at=NOW()
-    RETURNING id
-)
-UPDATE subscriber_lists SET status='unsubscribed', updated_at=NOW()
-    WHERE subscriber_id = (SELECT id FROM sub);
-
--- name: update-subscriber
--- Updates a subscriber's data, and given a list of list_ids, inserts subscriptions
--- for them while deleting existing subscriptions not in the list.
-WITH s AS (
-    UPDATE subscribers SET
-        email=(CASE WHEN $2 != '' THEN $2 ELSE email END),
-        name=(CASE WHEN $3 != '' THEN $3 ELSE name END),
-        status=(CASE WHEN $4 != '' THEN $4::subscriber_status ELSE status END),
-        attribs=(CASE WHEN $5::TEXT != '' THEN $5::JSONB ELSE attribs END),
-        updated_at=NOW()
-    WHERE id = $1 RETURNING id
-),
-d AS (
-    DELETE FROM subscriber_lists WHERE subscriber_id = $1 AND list_id != ALL($6)
-)
-INSERT INTO subscriber_lists (subscriber_id, list_id, status)
-    VALUES(
-        (SELECT id FROM s),
-        UNNEST($6),
-        (CASE WHEN $4='blacklisted' THEN 'unsubscribed'::subscription_status ELSE 'unconfirmed' END)
-    )
-    ON CONFLICT (subscriber_id, list_id) DO UPDATE
-    SET status = (CASE WHEN $4='blacklisted' THEN 'unsubscribed'::subscription_status ELSE 'unconfirmed' END);
-
--- name: delete-subscribers
--- Delete one or more subscribers by ID or UUID.
-DELETE FROM subscribers WHERE CASE WHEN ARRAY_LENGTH($1::INT[], 1) > 0 THEN id = ANY($1) ELSE uuid = ANY($2::UUID[]) END;
-
--- name: blacklist-subscribers
-WITH b AS (
-    UPDATE subscribers SET status='blacklisted', updated_at=NOW()
-    WHERE id = ANY($1::INT[])
-)
-UPDATE subscriber_lists SET status='unsubscribed', updated_at=NOW()
-    WHERE subscriber_id = ANY($1::INT[]);
-
--- name: add-subscribers-to-lists
-INSERT INTO subscriber_lists (subscriber_id, list_id)
-    (SELECT a, b FROM UNNEST($1::INT[]) a, UNNEST($2::INT[]) b)
-    ON CONFLICT (subscriber_id, list_id) DO NOTHING;
-
--- name: delete-subscriptions
-DELETE FROM subscriber_lists
-    WHERE (subscriber_id, list_id) = ANY(SELECT a, b FROM UNNEST($1::INT[]) a, UNNEST($2::INT[]) b);
-
--- name: confirm-subscription-optin
-WITH subID AS (
-    SELECT id FROM subscribers WHERE uuid = $1::UUID
-),
-listIDs AS (
-    SELECT id FROM lists WHERE uuid = ANY($2::UUID[])
-)
-UPDATE subscriber_lists SET status='confirmed', updated_at=NOW()
-    WHERE subscriber_id = (SELECT id FROM subID) AND list_id = ANY(SELECT id FROM listIDs);
-
--- name: unsubscribe-subscribers-from-lists
-UPDATE subscriber_lists SET status='unsubscribed', updated_at=NOW()
-    WHERE (subscriber_id, list_id) = ANY(SELECT a, b FROM UNNEST($1::INT[]) a, UNNEST($2::INT[]) b);
-
--- name: unsubscribe
--- Unsubscribes a subscriber given a campaign UUID (from all the lists in the campaign) and the subscriber UUID.
--- If $3 is TRUE, then all subscriptions of the subscriber is blacklisted
--- and all existing subscriptions, irrespective of lists, unsubscribed.
-WITH lists AS (
-    SELECT list_id FROM campaign_lists
-    LEFT JOIN campaigns ON (campaign_lists.campaign_id = campaigns.id)
-    WHERE campaigns.uuid = $1
-),
-sub AS (
-    UPDATE subscribers SET status = (CASE WHEN $3 IS TRUE THEN 'blacklisted' ELSE status END)
-    WHERE uuid = $2 RETURNING id
-)
-UPDATE subscriber_lists SET status = 'unsubscribed' WHERE
-    subscriber_id = (SELECT id FROM sub) AND status != 'unsubscribed' AND
-    -- If $3 is false, unsubscribe from the campaign's lists, otherwise all lists.
-    CASE WHEN $3 IS FALSE THEN list_id = ANY(SELECT list_id FROM lists) ELSE list_id != 0 END;
-
--- privacy
--- name: export-subscriber-data
-WITH prof AS (
-    SELECT id, uuid, email, name, attribs, status, created_at, updated_at FROM subscribers WHERE
-    CASE WHEN $1 > 0 THEN id = $1 ELSE uuid = $2 END
-),
-subs AS (
-    SELECT subscriber_lists.status AS subscription_status,
-            (CASE WHEN lists.type = 'private' THEN 'Private list' ELSE lists.name END) as name,
-            lists.type, subscriber_lists.created_at
-    FROM lists
-    LEFT JOIN subscriber_lists ON (subscriber_lists.list_id = lists.id)
-    WHERE subscriber_lists.subscriber_id = (SELECT id FROM prof)
-),
-views AS (
-    SELECT subject as campaign, COUNT(subscriber_id) as views FROM campaign_views
-        LEFT JOIN campaigns ON (campaigns.id = campaign_views.campaign_id)
-        WHERE subscriber_id = (SELECT id FROM prof)
-        GROUP BY campaigns.id ORDER BY id
-),
-clicks AS (
-    SELECT url, COUNT(subscriber_id) as clicks FROM link_clicks
-        LEFT JOIN links ON (links.id = link_clicks.link_id)
-        WHERE subscriber_id = (SELECT id FROM prof)
-        GROUP BY links.id ORDER BY id
-)
-SELECT (SELECT email FROM prof) as email,
-        COALESCE((SELECT JSON_AGG(t) FROM prof t), '{}') AS profile,
-        COALESCE((SELECT JSON_AGG(t) FROM subs t), '[]') AS subscriptions,
-        COALESCE((SELECT JSON_AGG(t) FROM views t), '[]') AS campaign_views,
-        COALESCE((SELECT JSON_AGG(t) FROM clicks t), '[]') AS link_clicks;
-
--- Partial and RAW queries used to construct arbitrary subscriber
--- queries for segmentation follow.
-
--- name: query-subscribers
--- raw: true
--- Unprepared statement for issuring arbitrary WHERE conditions for
--- searching subscribers. While the results are sliced using offset+limit,
--- there's a COUNT() OVER() that still returns the total result count
--- for pagination in the frontend, albeit being a field that'll repeat
--- with every resultant row.
-SELECT COUNT(*) OVER () AS total, subscribers.* FROM subscribers
-    LEFT JOIN subscriber_lists
-    ON (
-        -- Optional list filtering.
-        (CASE WHEN CARDINALITY($1::INT[]) > 0 THEN true ELSE false END)
-        AND subscriber_lists.subscriber_id = subscribers.id
-    )
-    WHERE subscriber_lists.list_id = ALL($1::INT[])
-    %s
-    ORDER BY $2 DESC OFFSET $3 LIMIT $4;
-
--- name: query-subscribers-template
--- raw: true
--- This raw query is reused in multiple queries (blacklist, add to list, delete)
--- etc., so it's kept has a raw template to be injected into other raw queries,
--- and for the same reason, it is not terminated with a semicolon.
---
--- All queries that embed this query should expect
--- $1=true/false (dry-run or not) and $2=[]INT (option list IDs).
--- That is, their positional arguments should start from $3.
-SELECT subscribers.id FROM subscribers
-LEFT JOIN subscriber_lists
-ON (
-    -- Optional list filtering.
-    (CASE WHEN CARDINALITY($2::INT[]) > 0 THEN true ELSE false END)
-    AND subscriber_lists.subscriber_id = subscribers.id
-)
-WHERE subscriber_lists.list_id = ALL($2::INT[]) %s
-LIMIT (CASE WHEN $1 THEN 1 END)
-
--- name: delete-subscribers-by-query
--- raw: true
-WITH subs AS (%s)
-DELETE FROM subscribers WHERE id=ANY(SELECT id FROM subs);
-
--- name: blacklist-subscribers-by-query
--- raw: true
-WITH subs AS (%s),
-b AS (
-    UPDATE subscribers SET status='blacklisted', updated_at=NOW()
-    WHERE id = ANY(SELECT id FROM subs)
-)
-UPDATE subscriber_lists SET status='unsubscribed', updated_at=NOW()
-    WHERE subscriber_id = ANY(SELECT id FROM subs);
-
--- name: add-subscribers-to-lists-by-query
--- raw: true
-WITH subs AS (%s)
-INSERT INTO subscriber_lists (subscriber_id, list_id)
-    (SELECT a, b FROM UNNEST(ARRAY(SELECT id FROM subs)) a, UNNEST($3::INT[]) b)
-    ON CONFLICT (subscriber_id, list_id) DO NOTHING;
-
--- name: delete-subscriptions-by-query
--- raw: true
-WITH subs AS (%s)
-DELETE FROM subscriber_lists
-    WHERE (subscriber_id, list_id) = ANY(SELECT a, b FROM UNNEST(ARRAY(SELECT id FROM subs)) a, UNNEST($3::INT[]) b);
-
--- name: unsubscribe-subscribers-from-lists-by-query
--- raw: true
-WITH subs AS (%s)
-UPDATE subscriber_lists SET status='unsubscribed', updated_at=NOW()
-    WHERE (subscriber_id, list_id) = ANY(SELECT a, b FROM UNNEST(ARRAY(SELECT id FROM subs)) a, UNNEST($3::INT[]) b);
-
-
--- lists
--- name: get-lists
-SELECT COUNT(*) OVER () AS total, lists.*, COUNT(subscriber_lists.subscriber_id) AS subscriber_count
-    FROM lists LEFT JOIN subscriber_lists
-	ON (subscriber_lists.list_id = lists.id AND subscriber_lists.status != 'unsubscribed')
-    WHERE ($1 = 0 OR id = $1)
-    GROUP BY lists.id ORDER BY lists.created_at OFFSET $2 LIMIT (CASE WHEN $3 = 0 THEN NULL ELSE $3 END);
-
--- name: get-lists-by-optin
--- Can have a list of IDs or a list of UUIDs.
-SELECT * FROM lists WHERE (CASE WHEN $1 != '' THEN optin=$1::list_optin ELSE TRUE END) AND
-    (CASE WHEN $2::INT[] IS NOT NULL THEN id = ANY($2::INT[])
-          WHEN $3::UUID[] IS NOT NULL THEN uuid = ANY($3::UUID[])
-    END) ORDER BY name;
-
--- name: create-list
-INSERT INTO lists (uuid, name, type, optin, tags) VALUES($1, $2, $3, $4, $5) RETURNING id;
-
--- name: update-list
-UPDATE lists SET
-    name=(CASE WHEN $2 != '' THEN $2 ELSE name END),
-    type=(CASE WHEN $3 != '' THEN $3::list_type ELSE type END),
-    optin=(CASE WHEN $4 != '' THEN $4::list_optin ELSE optin END),
-    tags=(CASE WHEN ARRAY_LENGTH($5::VARCHAR(100)[], 1) > 0 THEN $5 ELSE tags END),
-    updated_at=NOW()
-WHERE id = $1;
-
--- name: update-lists-date
-UPDATE lists SET updated_at=NOW() WHERE id = ANY($1);
-
--- name: delete-lists
-DELETE FROM lists WHERE id = ALL($1);
-
-
--- campaigns
--- name: create-campaign
--- This creates the campaign and inserts campaign_lists relationships.
-WITH campLists AS (
-    -- Get the list_ids and their optin statuses for the campaigns found in the previous step.
-    SELECT id AS list_id, campaign_id, optin FROM lists
-    INNER JOIN campaign_lists ON (campaign_lists.list_id = lists.id)
-    WHERE id=ANY($12::INT[])
-),
-tpl AS (
-    -- If there's no template_id given, use the defualt template.
-    SELECT (CASE WHEN $11 = 0 THEN id ELSE $11 END) AS id FROM templates WHERE is_default IS TRUE
-),
-counts AS (
-    SELECT COALESCE(COUNT(id), 0) as to_send, COALESCE(MAX(id), 0) as max_sub_id
-    FROM subscribers
-    LEFT JOIN campLists ON (campLists.campaign_id = ANY($12::INT[]))
-    LEFT JOIN subscriber_lists ON (
-        subscriber_lists.status != 'unsubscribed' AND
-        subscribers.id = subscriber_lists.subscriber_id AND
-        subscriber_lists.list_id = campLists.list_id AND
-
-        -- For double opt-in lists, consider only 'confirmed' subscriptions. For single opt-ins,
-        -- any status except for 'unsubscribed' (already excluded above) works.
-        (CASE WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed' ELSE true END)
-    )
-    WHERE subscriber_lists.list_id=ANY($12::INT[])
-    AND subscribers.status='enabled'
-),
-camp AS (
-    INSERT INTO campaigns (uuid, type, name, subject, from_email, body, content_type, send_at, tags, messenger, template_id, to_send, max_subscriber_id)
-        SELECT $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, (SELECT id FROM tpl), (SELECT to_send FROM counts), (SELECT max_sub_id FROM counts)
-        RETURNING id
-)
-INSERT INTO campaign_lists (campaign_id, list_id, list_name)
-    (SELECT (SELECT id FROM camp), id, name FROM lists WHERE id=ANY($12::INT[]))
-    RETURNING (SELECT id FROM camp);
-
--- name: query-campaigns
--- Here, 'lists' is returned as an aggregated JSON array from campaign_lists because
--- the list reference may have been deleted.
--- While the results are sliced using offset+limit,
--- there's a COUNT() OVER() that still returns the total result count
--- for pagination in the frontend, albeit being a field that'll repeat
--- with every resultant row.
-SELECT COUNT(*) OVER () AS total, campaigns.*, (
-        SELECT COALESCE(ARRAY_TO_JSON(ARRAY_AGG(l)), '[]') FROM (
-            SELECT COALESCE(campaign_lists.list_id, 0) AS id,
-            campaign_lists.list_name AS name
-            FROM campaign_lists WHERE campaign_lists.campaign_id = campaigns.id
-        ) l
-    ) AS lists
-FROM campaigns
-WHERE ($1 = 0 OR id = $1)
-    AND status=ANY(CASE WHEN ARRAY_LENGTH($2::campaign_status[], 1) != 0 THEN $2::campaign_status[] ELSE ARRAY[status] END)
-    AND ($3 = '' OR (to_tsvector(name || subject) @@ to_tsquery($3)))
-ORDER BY created_at DESC OFFSET $4 LIMIT $5;
-
--- name: get-campaign
-SELECT * FROM campaigns WHERE id = $1;
-
--- name: get-campaign-stats
--- This query is used to lazy load campaign stats (views, counts, list of lists) given a list of campaign IDs.
--- The query returns results in the same order as the given campaign IDs, and for non-existent campaign IDs,
--- the query still returns a row with 0 values. Thus, for lazy loading, the application simply iterate on the results in
--- the same order as the list of campaigns it would've queried and attach the results.
-WITH lists AS (
-    SELECT campaign_id, JSON_AGG(JSON_BUILD_OBJECT('id', list_id, 'name', list_name)) AS lists FROM campaign_lists
-    WHERE campaign_id = ANY($1) GROUP BY campaign_id
-), views AS (
-    SELECT campaign_id, COUNT(campaign_id) as num FROM campaign_views
-    WHERE campaign_id = ANY($1)
-    GROUP BY campaign_id
-),
-clicks AS (
-    SELECT campaign_id, COUNT(campaign_id) as num FROM link_clicks
-    WHERE campaign_id = ANY($1)
-    GROUP BY campaign_id
-)
-SELECT id as campaign_id,
-    COALESCE(v.num, 0) AS views,
-    COALESCE(c.num, 0) AS clicks,
-    COALESCE(l.lists, '[]') AS lists
-FROM (SELECT id FROM UNNEST($1) AS id) x
-LEFT JOIN lists AS l ON (l.campaign_id = id)
-LEFT JOIN views AS v ON (v.campaign_id = id)
-LEFT JOIN clicks AS c ON (c.campaign_id = id)
-ORDER BY ARRAY_POSITION($1, id);
-
--- name: get-campaign-for-preview
-SELECT campaigns.*, COALESCE(templates.body, (SELECT body FROM templates WHERE is_default = true LIMIT 1)) AS template_body,
-(
-	SELECT COALESCE(ARRAY_TO_JSON(ARRAY_AGG(l)), '[]') FROM (
-		SELECT COALESCE(campaign_lists.list_id, 0) AS id,
-        campaign_lists.list_name AS name
-        FROM campaign_lists WHERE campaign_lists.campaign_id = campaigns.id
-	) l
-) AS lists
-FROM campaigns
-LEFT JOIN templates ON (templates.id = campaigns.template_id)
-WHERE campaigns.id = $1;
-
--- name: get-campaign-status
-SELECT id, status, to_send, sent, started_at, updated_at
-    FROM campaigns
-    WHERE status=$1;
-
--- name: next-campaigns
--- Retreives campaigns that are running (or scheduled and the time's up) and need
--- to be processed. It updates the to_send count and max_subscriber_id of the campaign,
--- that is, the total number of subscribers to be processed across all lists of a campaign.
--- Thus, it has a sideaffect.
--- In addition, it finds the max_subscriber_id, the upper limit across all lists of
--- a campaign. This is used to fetch and slice subscribers for the campaign in next-subscriber-campaigns.
-WITH camps AS (
-    -- Get all running campaigns and their template bodies (if the template's deleted, the default template body instead)
-    SELECT campaigns.*, COALESCE(templates.body, (SELECT body FROM templates WHERE is_default = true LIMIT 1)) AS template_body
-    FROM campaigns
-    LEFT JOIN templates ON (templates.id = campaigns.template_id)
-    WHERE (status='running' OR (status='scheduled' AND NOW() >= campaigns.send_at))
-    AND NOT(campaigns.id = ANY($1::INT[]))
-),
-campLists AS (
-    -- Get the list_ids and their optin statuses for the campaigns found in the previous step.
-    SELECT id AS list_id, campaign_id, optin FROM lists
-    INNER JOIN campaign_lists ON (campaign_lists.list_id = lists.id)
-    WHERE campaign_lists.campaign_id = ANY(SELECT id FROM camps)
-),
-counts AS (
-    -- For each campaign above, get the total number of subscribers and the max_subscriber_id
-    -- across all its lists.
-    SELECT id AS campaign_id,
-                 COUNT(DISTINCT(subscriber_lists.subscriber_id)) AS to_send,
-                 COALESCE(MAX(subscriber_lists.subscriber_id), 0) AS max_subscriber_id
-    FROM camps
-    LEFT JOIN campLists ON (campLists.campaign_id = camps.id)
-    LEFT JOIN subscriber_lists ON (
-        subscriber_lists.list_id = campLists.list_id AND
-        (CASE
-            -- For optin campaigns, only e-mail 'unconfirmed' subscribers belonging to 'double' optin lists.
-            WHEN camps.type = 'optin' THEN subscriber_lists.status = 'unconfirmed' AND campLists.optin = 'double'
-
-            -- For regular campaigns with double optin lists, only e-mail 'confirmed' subscribers.
-            WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed'
-
-            -- For regular campaigns with non-double optin lists, e-mail everyone
-            -- except unsubscribed subscribers.
-            ELSE subscriber_lists.status != 'unsubscribed'
-        END)
-    )
-    GROUP BY camps.id
-),
-u AS (
-    -- For each campaign, update the to_send count and set the max_subscriber_id.
-    UPDATE campaigns AS ca
-    SET to_send = co.to_send,
-        status = (CASE WHEN status != 'running' THEN 'running' ELSE status END),
-        max_subscriber_id = co.max_subscriber_id,
-        started_at=(CASE WHEN ca.started_at IS NULL THEN NOW() ELSE ca.started_at END)
-    FROM (SELECT * FROM counts) co
-    WHERE ca.id = co.campaign_id
-)
-SELECT * FROM camps;
-
--- name: next-campaign-subscribers
--- Returns a batch of subscribers in a given campaign starting from the last checkpoint
--- (last_subscriber_id). Every fetch updates the checkpoint and the sent count, which means
--- every fetch returns a new batch of subscribers until all rows are exhausted.
-WITH camps AS (
-    SELECT last_subscriber_id, max_subscriber_id, type
-    FROM campaigns
-    WHERE id=$1 AND status='running'
-),
-campLists AS (
-    SELECT id AS list_id, optin FROM lists
-    INNER JOIN campaign_lists ON (campaign_lists.list_id = lists.id)
-    WHERE campaign_lists.campaign_id = $1
-),
-subs AS (
-    SELECT DISTINCT ON(subscribers.id) id AS uniq_id, subscribers.* FROM subscriber_lists
-    INNER JOIN campLists ON (
-        campLists.list_id = subscriber_lists.list_id
-    )
-    INNER JOIN subscribers ON (
-        subscribers.status != 'blacklisted' AND
-        subscribers.id = subscriber_lists.subscriber_id AND
-
-        (CASE
-            -- For optin campaigns, only e-mail 'unconfirmed' subscribers.
-            WHEN (SELECT type FROM camps) = 'optin' THEN subscriber_lists.status = 'unconfirmed' AND campLists.optin = 'double'
-
-            -- For regular campaigns with double optin lists, only e-mail 'confirmed' subscribers.
-            WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed'
-
-            -- For regular campaigns with non-double optin lists, e-mail everyone
-            -- except unsubscribed subscribers.
-            ELSE subscriber_lists.status != 'unsubscribed'
-        END)
-    )
-    WHERE subscriber_lists.status != 'unsubscribed' AND
-    id > (SELECT last_subscriber_id FROM camps) AND
-    id <= (SELECT max_subscriber_id FROM camps)
-    ORDER BY id LIMIT $2
-),
-u AS (
-    UPDATE campaigns
-    SET last_subscriber_id = (SELECT MAX(id) FROM subs),
-        sent = sent + (SELECT COUNT(id) FROM subs),
-        updated_at = NOW()
-    WHERE (SELECT COUNT(id) FROM subs) > 0 AND id=$1
-)
-SELECT * FROM subs;
-
--- name: get-one-campaign-subscriber
-SELECT * FROM subscribers
-LEFT JOIN subscriber_lists ON (subscribers.id = subscriber_lists.subscriber_id AND subscriber_lists.status != 'unsubscribed')
-WHERE subscriber_lists.list_id=ANY(
-    SELECT list_id FROM campaign_lists where campaign_id=$1 AND list_id IS NOT NULL
-)
-ORDER BY RANDOM() LIMIT 1;
-
--- name: update-campaign
-WITH camp AS (
-    UPDATE campaigns SET
-        name=(CASE WHEN $2 != '' THEN $2 ELSE name END),
-        subject=(CASE WHEN $3 != '' THEN $3 ELSE subject END),
-        from_email=(CASE WHEN $4 != '' THEN $4 ELSE from_email END),
-        body=(CASE WHEN $5 != '' THEN $5 ELSE body END),
-        content_type=(CASE WHEN $6 != '' THEN $6::content_type ELSE content_type END),
-        send_at=(CASE WHEN $8 THEN $7::TIMESTAMP WITH TIME ZONE WHEN NOT $8 THEN NULL ELSE send_at END),
-        tags=(CASE WHEN ARRAY_LENGTH($9::VARCHAR(100)[], 1) > 0 THEN $9 ELSE tags END),
-        template_id=(CASE WHEN $10 != 0 THEN $10 ELSE template_id END),
-        updated_at=NOW()
-    WHERE id = $1 RETURNING id
-),
-d AS (
-    -- Reset list relationships
-    DELETE FROM campaign_lists WHERE campaign_id = $1 AND NOT(list_id = ANY($11))
-)
-INSERT INTO campaign_lists (campaign_id, list_id, list_name)
-    (SELECT $1 as campaign_id, id, name FROM lists WHERE id=ANY($11::INT[]))
-    ON CONFLICT (campaign_id, list_id) DO UPDATE SET list_name = EXCLUDED.list_name;
-
--- name: update-campaign-counts
-UPDATE campaigns SET
-    to_send=(CASE WHEN $2 != 0 THEN $2 ELSE to_send END),
-    sent=(CASE WHEN $3 != 0 THEN $3 ELSE sent END),
-    last_subscriber_id=(CASE WHEN $4 != 0 THEN $4 ELSE last_subscriber_id END),
-    updated_at=NOW()
-WHERE id=$1;
-
--- name: update-campaign-status
-UPDATE campaigns SET status=$2, updated_at=NOW() WHERE id = $1;
-
--- name: delete-campaign
-DELETE FROM campaigns WHERE id=$1 AND (status = 'draft' OR status = 'scheduled');
-
--- name: register-campaign-view
-WITH view AS (
-    SELECT campaigns.id as campaign_id, subscribers.id AS subscriber_id FROM campaigns
-    LEFT JOIN subscribers ON (subscribers.uuid = $2)
-    WHERE campaigns.uuid = $1
-)
-INSERT INTO campaign_views (campaign_id, subscriber_id)
-    VALUES((SELECT campaign_id FROM view), (SELECT subscriber_id FROM view));
-
--- users
--- name: get-users
-SELECT * FROM users WHERE $1 = 0 OR id = $1 OFFSET $2 LIMIT $3;
-
--- name: create-user
-INSERT INTO users (email, name, password, type, status) VALUES($1, $2, $3, $4, $5) RETURNING id;
-
--- name: update-user
-UPDATE users SET
-    email=(CASE WHEN $2 != '' THEN $2 ELSE email END),
-    name=(CASE WHEN $3 != '' THEN $3 ELSE name END),
-    password=(CASE WHEN $4 != '' THEN $4 ELSE password END),
-    type=(CASE WHEN $5 != '' THEN $5::user_type ELSE type END),
-    status=(CASE WHEN $6 != '' THEN $6::user_status ELSE status END),
-    updated_at=NOW()
-WHERE id = $1;
-
--- name: delete-user
--- Delete a user, except for the primordial super admin.
-DELETE FROM users WHERE $1 != 1 AND id=$1;
-
-
--- templates
--- name: get-templates
--- Only if the second param ($2) is true, body is returned.
-SELECT id, name, (CASE WHEN $2 = false THEN body ELSE '' END) as body,
-    is_default, created_at, updated_at
-    FROM templates WHERE $1 = 0 OR id = $1
-    ORDER BY created_at;
-
--- name: create-template
-INSERT INTO templates (name, body) VALUES($1, $2) RETURNING id;
-
--- name: update-template
-UPDATE templates SET
-    name=(CASE WHEN $2 != '' THEN $2 ELSE name END),
-    body=(CASE WHEN $3 != '' THEN $3 ELSE body END),
-    updated_at=NOW()
-WHERE id = $1;
-
--- name: set-default-template
-WITH u AS (
-    UPDATE templates SET is_default=true WHERE id=$1 RETURNING id
-)
-UPDATE templates SET is_default=false WHERE id != $1;
-
--- name: delete-template
--- Delete a template as long as there's more than one. One deletion, set all campaigns
--- with that template to the default template instead.
-WITH tpl AS (
-    DELETE FROM templates WHERE id = $1 AND (SELECT COUNT(id) FROM templates) > 1 AND is_default = false RETURNING id
-),
-def AS (
-    SELECT id FROM templates WHERE is_default = true LIMIT 1
-)
-UPDATE campaigns SET template_id = (SELECT id FROM def) WHERE (SELECT id FROM tpl) > 0 AND template_id = $1
-    RETURNING (SELECT id FROM tpl);
-
-
--- media
--- name: insert-media
-INSERT INTO media (uuid, filename, thumb, width, height, created_at) VALUES($1, $2, $3, $4, $5, NOW());
-
--- name: get-media
-SELECT * FROM media ORDER BY created_at DESC;
-
--- name: delete-media
-DELETE FROM media WHERE id=$1 RETURNING filename;
-
--- links
--- name: create-link
-INSERT INTO links (uuid, url) VALUES($1, $2) ON CONFLICT (url) DO UPDATE SET url=EXCLUDED.url RETURNING uuid;
-
--- name: register-link-click
-WITH link AS (
-    SELECT url, links.id AS link_id, campaigns.id as campaign_id, subscribers.id AS subscriber_id FROM links
-    LEFT JOIN campaigns ON (campaigns.uuid = $2)
-    LEFT JOIN subscribers ON (subscribers.uuid = $3)
-    WHERE links.uuid = $1
-)
-INSERT INTO link_clicks (campaign_id, subscriber_id, link_id)
-    VALUES((SELECT campaign_id FROM link), (SELECT subscriber_id FROM link), (SELECT link_id FROM link))
-    RETURNING (SELECT url FROM link);
-
-
--- name: get-dashboard-stats
-WITH lists AS (
-    SELECT JSON_OBJECT_AGG(type, num) FROM (SELECT type, COUNT(id) AS num FROM lists GROUP BY type) row
-),
-subs AS (
-    SELECT JSON_OBJECT_AGG(status, num) FROM (SELECT status, COUNT(id) AS num FROM subscribers GROUP by status) row
-),
-orphans AS (
-    SELECT COUNT(id) FROM subscribers LEFT JOIN subscriber_lists ON (subscribers.id = subscriber_lists.subscriber_id)
-    WHERE subscriber_lists.subscriber_id IS NULL
-),
-camps AS (
-    SELECT JSON_OBJECT_AGG(status, num) FROM (SELECT status, COUNT(id) AS num FROM campaigns GROUP by status) row
-),
-clicks AS (
-    -- Clicks by day for the last 3 months
-    SELECT JSON_AGG(ROW_TO_JSON(row))
-    FROM (SELECT COUNT(*) AS count, created_at::DATE as date
-          FROM link_clicks GROUP by date ORDER BY date DESC LIMIT 100
-    ) row
-),
-views AS (
-    -- Views by day for the last 3 months
-    SELECT JSON_AGG(ROW_TO_JSON(row))
-    FROM (SELECT COUNT(*) AS count, created_at::DATE as date
-          FROM campaign_views GROUP by date ORDER BY date DESC LIMIT 100
-    ) row
-)
-SELECT JSON_BUILD_OBJECT('lists', COALESCE((SELECT * FROM lists), '[]'),
-                        'subscribers', COALESCE((SELECT * FROM subs), '[]'),
-                        'orphan_subscribers', (SELECT * FROM orphans),
-                        'campaigns', COALESCE((SELECT * FROM camps), '[]'),
-                        'link_clicks', COALESCE((SELECT * FROM clicks), '[]'),
-                        'campaign_views', COALESCE((SELECT * FROM views), '[]')) AS stats;

static/schema.sql

@@ -1,158 +0,0 @@
-DROP TYPE IF EXISTS list_type CASCADE; CREATE TYPE list_type AS ENUM ('public', 'private', 'temporary');
-DROP TYPE IF EXISTS list_optin CASCADE; CREATE TYPE list_optin AS ENUM ('single', 'double');
-DROP TYPE IF EXISTS subscriber_status CASCADE; CREATE TYPE subscriber_status AS ENUM ('enabled', 'disabled', 'blacklisted');
-DROP TYPE IF EXISTS subscription_status CASCADE; CREATE TYPE subscription_status AS ENUM ('unconfirmed', 'confirmed', 'unsubscribed');
-DROP TYPE IF EXISTS campaign_status CASCADE; CREATE TYPE campaign_status AS ENUM ('draft', 'running', 'scheduled', 'paused', 'cancelled', 'finished');
-DROP TYPE IF EXISTS campaign_type CASCADE; CREATE TYPE campaign_type AS ENUM ('regular', 'optin');
-DROP TYPE IF EXISTS content_type CASCADE; CREATE TYPE content_type AS ENUM ('richtext', 'html', 'plain');
-
--- subscribers
-DROP TABLE IF EXISTS subscribers CASCADE;
-CREATE TABLE subscribers (
-    id              SERIAL PRIMARY KEY,
-    uuid uuid       NOT NULL UNIQUE,
-    email           TEXT NOT NULL UNIQUE,
-    name            TEXT NOT NULL,
-    attribs         JSONB NOT NULL DEFAULT '{}',
-    status          subscriber_status NOT NULL DEFAULT 'enabled',
-    campaigns       INTEGER[],
-
-    created_at      TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-    updated_at      TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-DROP INDEX IF EXISTS idx_subs_email; CREATE UNIQUE INDEX idx_subs_email ON subscribers(LOWER(email));
-DROP INDEX IF EXISTS idx_subs_status; CREATE INDEX idx_subs_status ON subscribers(status);
-
--- lists
-DROP TABLE IF EXISTS lists CASCADE;
-CREATE TABLE lists (
-    id              SERIAL PRIMARY KEY,
-    uuid            uuid NOT NULL UNIQUE,
-    name            TEXT NOT NULL,
-    type            list_type NOT NULL,
-    optin           list_optin NOT NULL DEFAULT 'single',
-    tags            VARCHAR(100)[],
-
-    created_at      TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-    updated_at      TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-
-DROP TABLE IF EXISTS subscriber_lists CASCADE;
-CREATE TABLE subscriber_lists (
-    subscriber_id      INTEGER REFERENCES subscribers(id) ON DELETE CASCADE ON UPDATE CASCADE,
-    list_id            INTEGER NULL REFERENCES lists(id) ON DELETE CASCADE ON UPDATE CASCADE,
-    status             subscription_status NOT NULL DEFAULT 'unconfirmed',
-
-    created_at         TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-    updated_at         TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-
-    PRIMARY KEY(subscriber_id, list_id)
-);
-DROP INDEX IF EXISTS idx_sub_lists_sub_id; CREATE INDEX idx_sub_lists_sub_id ON subscriber_lists(subscriber_id);
-DROP INDEX IF EXISTS idx_sub_lists_list_id; CREATE INDEX idx_sub_lists_list_id ON subscriber_lists(list_id);
-DROP INDEX IF EXISTS idx_sub_lists_status; CREATE INDEX idx_sub_lists_status ON subscriber_lists(status);
-
--- templates
-DROP TABLE IF EXISTS templates CASCADE;
-CREATE TABLE templates (
-    id              SERIAL PRIMARY KEY,
-    name            TEXT NOT NULL,
-    body            TEXT NOT NULL,
-    is_default      BOOLEAN NOT NULL DEFAULT false,
-
-    created_at      TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-    updated_at      TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-CREATE UNIQUE INDEX ON templates (is_default) WHERE is_default = true;
-
-
--- campaigns
-DROP TABLE IF EXISTS campaigns CASCADE;
-CREATE TABLE campaigns (
-    id               SERIAL PRIMARY KEY,
-    uuid uuid        NOT NULL UNIQUE,
-    name             TEXT NOT NULL,
-    subject          TEXT NOT NULL,
-    from_email       TEXT NOT NULL,
-    body             TEXT NOT NULL,
-    content_type     content_type NOT NULL DEFAULT 'richtext',
-    send_at          TIMESTAMP WITH TIME ZONE,
-    status           campaign_status NOT NULL DEFAULT 'draft',
-    tags             VARCHAR(100)[],
-
-    -- The subscription statuses of subscribers to which a campaign will be sent.
-    -- For opt-in campaigns, this will be 'unsubscribed'.
-    type campaign_type DEFAULT 'regular',
-
-    -- The ID of the messenger backend used to send this campaign. 
-    messenger        TEXT NOT NULL,
-    template_id      INTEGER REFERENCES templates(id) ON DELETE SET DEFAULT DEFAULT 1,
-
-    -- Progress and stats.
-    to_send            INT NOT NULL DEFAULT 0,
-    sent               INT NOT NULL DEFAULT 0,
-    max_subscriber_id  INT NOT NULL DEFAULT 0,
-    last_subscriber_id INT NOT NULL DEFAULT 0,
-
-    started_at       TIMESTAMP WITH TIME ZONE,
-    created_at       TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-    updated_at       TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-
-DROP TABLE IF EXISTS campaign_lists CASCADE;
-CREATE TABLE campaign_lists (
-    campaign_id  INTEGER NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE ON UPDATE CASCADE,
-
-    -- Lists may be deleted, so list_id is nullable
-    -- and a copy of the original list name is maintained here.
-    list_id      INTEGER NULL REFERENCES lists(id) ON DELETE SET NULL ON UPDATE CASCADE,
-    list_name    TEXT NOT NULL DEFAULT ''
-);
-CREATE UNIQUE INDEX ON campaign_lists (campaign_id, list_id);
-DROP INDEX IF EXISTS idx_camp_lists_camp_id; CREATE INDEX idx_camp_lists_camp_id ON campaign_lists(campaign_id);
-DROP INDEX IF EXISTS idx_camp_lists_list_id; CREATE INDEX idx_camp_lists_list_id ON campaign_lists(list_id);
-
-DROP TABLE IF EXISTS campaign_views CASCADE;
-CREATE TABLE campaign_views (
-    campaign_id      INTEGER NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE ON UPDATE CASCADE,
-
-    -- Subscribers may be deleted, but the view counts should remain.
-    subscriber_id    INTEGER NULL REFERENCES subscribers(id) ON DELETE SET NULL ON UPDATE CASCADE,
-    created_at       TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-DROP INDEX IF EXISTS idx_views_camp_id; CREATE INDEX idx_views_camp_id ON campaign_views(campaign_id);
-DROP INDEX IF EXISTS idx_views_subscriber_id; CREATE INDEX idx_views_subscriber_id ON campaign_views(subscriber_id);
-
--- media
-DROP TABLE IF EXISTS media CASCADE;
-CREATE TABLE media (
-    id               SERIAL PRIMARY KEY,
-    uuid uuid        NOT NULL UNIQUE,
-    filename         TEXT NOT NULL,
-    thumb            TEXT NOT NULL,
-    width            INT NOT NULL DEFAULT 0,
-    height           INT NOT NULL DEFAULT 0,
-    created_at       TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-
--- links
-DROP TABLE IF EXISTS links CASCADE;
-CREATE TABLE links (
-    id               SERIAL PRIMARY KEY,
-    uuid uuid        NOT NULL UNIQUE,
-    url              TEXT NOT NULL UNIQUE,
-    created_at       TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-
-DROP TABLE IF EXISTS link_clicks CASCADE;
-CREATE TABLE link_clicks (
-    campaign_id      INTEGER REFERENCES campaigns(id) ON DELETE CASCADE ON UPDATE CASCADE,
-    link_id          INTEGER REFERENCES links(id) ON DELETE CASCADE ON UPDATE CASCADE,
-
-    -- Subscribers may be deleted, but the link counts should remain.
-    subscriber_id    INTEGER NULL REFERENCES subscribers(id) ON DELETE SET NULL ON UPDATE CASCADE,
-    created_at       TIMESTAMP WITH TIME ZONE DEFAULT NOW()
-);
-DROP INDEX IF EXISTS idx_clicks_camp_id; CREATE INDEX idx_clicks_camp_id ON link_clicks(campaign_id);
-DROP INDEX IF EXISTS idx_clicks_link_id; CREATE INDEX idx_clicks_link_id ON link_clicks(link_id);
-DROP INDEX IF EXISTS idx_clicks_sub_id; CREATE INDEX idx_clicks_sub_id ON link_clicks(subscriber_id);